determine distance between two points

Subject: a mathematical problem: finding the location with the smallest sum of the distance between N points. Mathe ;)Prepared by: rickone (rickone)Level 1:Reputation: 100Forum: topic development data structure and AlgorithmProblem count: 50Reply times: 21Posting time: 19:26:57 The coordinate format of N points input by the Program (XI, Yi) [I = 1 to n]Output the

Topic Link: Click to open the linkTest instructions4 points on a given two-dimensional coordinateAsk:Find a point to make this point distance from 4 points and the minimumOutput distance and.Ideas:If 4 points are not convex 4-edged. Must be the optimal endpoint.Otherwise, th

/** * @desc calculates distance according to latitude and longitude between two points * @param float $lat latitude value * @param float $LNG Longitude value */function Getdistance ($lat 1, $lng 1, $lat 2, $LN 　　G2) {$earthRadius = 6367000; 　　$lat 1 = ($lat 1 * PI ())/180; 　　$LNG 1 = ($lng 1 * PI ())/180; 　　$lat 2 = ($lat 2 * PI ())/180; 　　$LNG 2 = ($lng 2 * PI ())/180; 　　$calcLongitude = $lng 2-$LNG 1; 　　$

Someone raised a question on the network. I think it is quite interesting. the problem is as follows: there is a moving point in the circle $ (x + a) ^ 2 + (Y + B) ^ 2 = C ^ 2, c> 0 $, there are two points outside the circle $ C (d, e), D (f, g) $. The sum of the distance from two points to the dynamic point is the smallest, and the coordinates of the dynamic

($lng 1)-Rad ($lng 2); $s = 2 * ASIN (sqrt (Pow (sin ($a/2), 2) + cos ($radLat 1) *cos ($radLat 2) *pow (sin ($b/2), 2))); $s = $s * $EARTH _radius; $s = round ($s * 10000)/10000; return $s;} Var_dump (getdistance ($point 1[' lat '), $point 1[' long '], $point 2[' lat '], $point 2[' long ']);/*array (5) {["Miles"]=> Float (2.6025445138617) ["Feet"]=> float (13741.43503319) ["Yards"]=> float (4580.4783443965) ["Kilometers"]= > Float (4.1883893981162) ["Meters"]=> float (4188.3893981162)}*

This article mainly introduces how PHP calculates the distance based on the longitude and latitude between two points. The code is very simple, but it is very practical. if you need it, you can refer to this as a good example and paste the code directly, first, you must know the latitude and longitude values. /*** @ Desc calculate the distance * @ param floa

Calculate the distance between two pointsTime limit:2000/1000 MS (java/others) Memory limit:65536/32768 K (java/others)Total submission (s): 254764 Accepted Submission (s): 88773Problem description Inputs two point coordinates (X1,Y1), (X2,y2), calculates and outputs the distance between two points.Input data has more than one group, each group of one row, consisting of 4 real numbers, representing X1,y1,x2

1924: Calculate the distance between two pointsDescriptionEnter two point coordinates (X1,Y1), (X2,y2), and calculate and output the distance between two points.InputThe input data has more than one group, each group occupies a row, consisting of 4 real numbers, representing X1,y1,x2,y2, separated by a space between the data.OutputFor each set of input data, the output is one line and the result retains two

#region get the distance between two points (latitude and longitude representation)Get the distance between two points (latitude and longitude representation)public static double Getdistance (double P1lat, double p1lng, double P2lat, double p2lng){Double Dlat1inrad = P1lat * (math.pi/180);Double Dlong1inrad = p1lng * (

Import Javax. Swing. joptionpane; Public Class Distance { Public Static Void Main (string [] ARGs) {string Input = Joptionpane. showinputdialog ( Null , "Enter the coordinates of X1:", "dialog box", Joptionpane. question_message); string input1 = Joptionpane. showinputdialog ( Null , "Enter the coordinates of Y1:", "dialog box" , Joptionpane. question_message); string input2 = Joptionpane. showinputdialog ( Null , "Enter the coordinates of

Test instructions: There are n individuals to the party, but the condition is that the party location to his home is not more than 2.5, now you need to find the best party location for the most people to party.Analysis:The topic looks very difficult, how to ask scope and then contain points? In fact, a center + RADIUS does not represent a circle.Enumerates the center of a circle with a radius of 2.5 for two points